do lunch vs memorialize

do lunch

verb
  • To have a lunchtime meeting, usually at a restaurant. 

memorialize

verb
  • To create a written record of a meeting or conversation. 

  • To provide a memorial for someone; to commemorate. 

  • To convert (someone’s profile) into a memorial site/page (e.g. on Facebook). 

How often have the words do lunch and memorialize occurred in a corpus of books? (source: Google Ngram Viewer )